body {
    color: #555;
}

p {
    color: #555;
}

.banner {
    position: relative;
    margin: 0 auto;
    text-align: center;
    margin-top: 20px;
}

.banner .bg_img {
    width: 90%;
    /* height: 90%; */
    /* margin-left: 50%; */
    /* transform: translateX(-50%); */
    margin-left: 5%;
}

.banner .bg_img img {
    width: 80%;
    height: 80%;
}

.navTo {
    width: 53%;
    display: flex;
    position: absolute;
    top: 62px;
    left: 15%;
    margin-left: 80px;
}

.navTo a {
    margin-left: 40px;
}

.navTo a img {
    transition: all 1s;
}

.navTo a img:hover {
    box-shadow: 0px 0px 12px #fafa00;
    transform: scale(1.08);
}

.navTo .oneBulid img {
    width: 80%;
}

.navTo .twoBulid img {
    width: 80%;
}

.navTo .threeBulid img {
    width: 80%;
}

.explain {
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    margin-top: 50px;
    width: 80%;
}

.explain .green,
.passageway {
    width: 140px;
    height: 40px;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.explain .green .box,
.passageway .box {
    display: inline-block;
    width: 50px;
    height: 30px;
    background-color: #00ff00;
}

.explain .green p,
.passageway p {
    display: inline-block;
    font-size: 24px;
}

.explain .passageway .box {
    background-color: #ffff7e;
}

.title {
    font-size: 34px;
    font-weight: 600;
    text-align: center;
    margin: 0;
}

@media screen and (max-width:1920px) {
    .navTo {
        width: 53%;
        display: flex;
        position: absolute;
        top: 62px;
        left: 15%;
        margin-left: 80px;
    }
    .navTo .oneBulid img {
        width: 80%;
        transition: all 1s;
    }
    .navTo .twoBulid img {
        width: 80%;
        transition: all 1s;
    }
    .navTo .threeBulid img {
        width: 80%;
        transition: all 1s;
    }
}

.one_banner {
    width: 98%;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.gy-mt10 {
    margin-top: 10%;
}

.one_banner .item {
    width: 300px;
}

.one_banner .item a {
    display: block;
    text-decoration: none;
}

.one_banner .item a img {
    transition: all 1s;
    opacity: .5;
}

.one_banner .item a img:hover {
    transform: scale(1.04);
    opacity: 1;
}

.one_banner .item a img {
    width: 100%;
}

.one_banner .item a p {
    font-size: 28px;
    text-align: center;
    margin-top: 40px;
    color: #555;
    width: 300px;
}

.gy-banner {
    width: 80%;
}

.gy-banner .item {
    width: 460px;
    margin-top: 40px;
}

.gy-banner .item a p {
    font-size: 28px;
    text-align: center;
    margin-top: 40px;
    color: #555;
    width: 460px;
}

.container {
    width: 900px;
    margin: 0 auto;
    margin-top: 20px;
}

.container img {
    width: 60%;
    margin-left: 50%;
    transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -webkit-transform: translateX(-50%);
    -o-transform: translateX(-50%);
}

.container h2 {
    text-align: center;
}

.gy-W100 {
    width: 1400px;
    margin-top: 20px;
    text-align: center;
    margin: 0 auto;
}

.W100 img {
    width: 100%;
}

.W56 img {
    width: 56%;
}

.w53 img {
    width: 53%;
}

.back {
    position: fixed;
    bottom: 4%;
    right: 2.5%;
    width: 120px;
    height: 120px;
    border: 2px solid #fafa00;
    border-radius: 50%;
}

.back a {
    position: fixed;
    bottom: 7%;
    right: 4.5%;
    opacity: .5;
    text-align: center;
}

.back a:hover {
    opacity: 1;
}

.back a img {
    transition: all .5s;
}

.back a img:hover {
    transform: scale(1.5);
}

.back_home {
    position: fixed;
    bottom: 4%;
    left: 2.5%;
    width: 120px;
    height: 120px;
    border: 2px solid #fafa00;
    border-radius: 50%;
}

.back_home a {
    position: fixed;
    bottom: 7%;
    left: 4.5%;
    opacity: .5;
    text-align: center;
}

.back_home a:hover {
    opacity: 1;
}

.back_home a img {
    transition: all .5s;
}

.back_home a img:hover {
    transform: scale(1.5);
}

@media screen and (min-width:1920px) {
    .navTo {
        width: 55%;
        display: flex;
        justify-content: space-evenly;
        position: absolute;
        top: 84px;
        left: 15%;
    }
    .navTo .oneBulid img {
        width: 100%;
        transition: all 1s;
    }
    .navTo .twoBulid img {
        width: 100%;
        transition: all 1s;
    }
    .navTo .threeBulid img {
        width: 100%;
        transition: all 1s;
    }
    .one_banner {
        margin-top: 160px;
    }
    .container {
        margin-top: 160px;
    }
    .container {
        margin: 0 auto;
        margin-top: 20px;
    }
    .container img {
        width: 80%;
        margin-left: 50%;
        transform: translateX(-50%);
        -ms-transform: translateX(-50%);
        -moz-transform: translateX(-50%);
        -webkit-transform: translateX(-50%);
        -o-transform: translateX(-50%);
    }
    .container h2 {
        text-align: center;
    }
    .W100 img {
        width: 140%;
    }
    .W56 img {
        width: 76%;
    }
    .w53 img {
        width: 72%;
    }
}